Separating and feeding device for paper-feeding machines.



v E. J. HAL 'SEPAEATING AND FEEDING DEVICE APPLIOATION FILE NO MODEL.

e T t J. Halllaer g ATENTBD DEC 29 1903 FEEDING MACHINES.

NITEI) STATES Patented December 29, 1903.

PATENT OF ICE.

SEPARATlNG AND FEEDING DEVICE torrArtr-tttome MACHINES.

. SPECIFICATION forming part of Letters Patent No. 748,279, dated December 29, 1903.

Application filed July 8, 19th an 1%. 7,522. iNombdel-l To aZZ whom it may concern. I I

, Be it known that I, ERNST JULIUS HALL: BERG, printer, a subject of the Kingof SWQ'.

denand Norway, and a resident of David Bagares gata No. 5, Stockholm, in the Kingdom of Sweden, have invented certain new and useful Improvements in Separating and Feeding Devices for Paper-Feeding Machines, of which the following is a specification, reference being made to the accompanying drawing.

to feed the sheets toward a gripping device intended to seize the most advanced sheet it has proved to be exceedingly difficultto preventone or more of thesheets nearest to the.

one seized by the gripping device from accompanying this sheet into the gripping device,:. this circumstance dependingipartly on a .dif ference in the friction between the several sheets, in consequence whereof the sheets be tween which the friction is the. least are separated and'partly on the almost complete ab:

sence ofair betweeii the sheets in the pile, which is highly compressed. 1

The purpose of this ,inventionis toeli mi nate these difficulties by placing betweenthe fanning-out device and the gripping device the separating and feeding devicein question.

The accompanying drawing shows a longitudinal vertical section of a part of a paperfeeding machine provided with a separating this invention. I i

l designates the frictional device (in this instance supposed to be a Wheel) of the fanning-out device, the friction-wheel being and feeding device carried out according to V cated above a pileof paper placed on the machine-table. Some of the uppermost sheets of the pile are fanned out by the Wheel, which is rotated in the direction indicated by the arrow, the uppermost sheet, which is in direct contact with the wheel, having the greatest This invention relates to a paper separating.

speed, while the speed of the next succeedin sheets gradually decreases downward.

2 designates a cylinder constantly rotating jsents rotatable rollers situated above. said cylinder andmovable toward the same. These forward.

sheetwhen the latter is pulled away, the malarly bent or curved plate 4, so that therewill in the direction of the arrow, while 3 reprewhich is to seize the uppermost sheet when the front edge of the same has reached the cylinder. I The sheet is seized by means of the rollers moving downward into contact. with the cylinder, so that said sheet is in consequence of the. rotation of the cylinder drawn away from the remaining-ones, and .thusfed In order to prevent the succeeding. sheets from accompanying the uppermost .70 chine-table is in front of the wheel 1 provided. with a ridge, preferably formed of an angube one surface sloping toward the pile of paper 5 and the convex side directed upward. Above the ridge, which extends inthe direction.

across the table-1;. e., transversely to the feeding direction of the sheetsis mounted. a shaft 5, which rotates continuously during.

the working of the machine and.which at a point in front of the frictional wheel 1 carries a wheel 6,.the periphery of which is at a suitable distance from the top of the ridge 4 and which is rotated by the shaft in the di rection of. the arrow, the periphery of said wheel-being, preferably, covered with indiarubber. naled a shaft 7, on which, just below the Beneath the ridge-plate 4 is jourwheel 6, is fixed an arm 8, the free end of which moveson the rocking ofythe shaft 7 to: ward or from the periphery of the wheel 6 through an aperture in the plate. When the sheets are fanned out, their front edges projecting beyond the edges of the underlying sheets will in consequence of their own weight hang down to some extent, and this hanging down, which is greatest in the uppermost sheet, increases as said sheet approaches the ridge 4. As soon as the front edge reaches the ridge it will glide upward on the same, whereby a space will be formed between the uppermost sheet and the front edge portion of the sheet next below, (as will be seen on the drawing,) in consequence whereof the air now has an opportunity of entering between said sheets. When the front edge of the u ppermost sheet has reached the top of the ridge, it enters between the rotating wheel 6 and the end of the arm 8 resting against the same, whereby the sheet is seized by the wheel, which is thus brought to cooperate with the wheel 1 in feeding the paper forward. At the same moment as the feeding action of the wheel 6 on the sheet commenced the portion of the sheet between the wheels 1 and 6 commenced, in consequence of the greater feeding-power of the wheel 6, to be stretched, and thus to be raised from the fanned-out part of the sheet next below. The ability of the air to enter between the first and the second sheets being thus increased, the separating of the sheets becomes facilitated, so that the uppermost sheet, which is now acted upon by two feeding devices, will be-easily and rapidly fed so far that the front edge of the same reaches the cylinder 2. The feeding-machine is in this instance, as in most cases, supposed to be arranged in such a manner that when the front edge of the uppermost sheet has reached the cylinder 2 in order to be then seized by the gripping device the action of the frictional wheel on the sheet is at the same time interrupted by a suitable readjusting mechanism. This mechanism may, by means of a suitable powertransmittiug device, be connected with the rocking shaft 7, so that when the readjustment of the mechanism takes place the arm 8 is simultaneously lowered into the position shown in dotted lines,the sheet being then entirely released. When it afterward is seized by the gripping device, it occupies the position shown in dotted lines, and it may now be pulled away from the pile without the risk of the next sheet accompanying the same, as an ample quantity of air can enter between the two sheets.

In some cases the ridge 4 may be used alone-that is to say, the wheel 6 and consequently the arm 8 are superfluous. If'the wheel 6 is left out, the cylinder 2 should be placed in rear of its position shown in the drawing, so that the upper surface of the same comes close to the top of the ridge in order that the front edge of the sheet may reach the gripping device as soon as possible after it has moved upward on the slope of the ridge. During this movement air enters, as mentioned above, between the sheets, and when the uppermost sheet is seized by the grippingdevice it will be stretched, just as before mentioned, in rear of the ridge, so that still more air enters between the sheets. It is evident that whether the wheel 6 is used or not the ridge 4 maybe omitted if the arm 8 is made sufficiently wide. If the wheel is used, the arm is either movable, as mentioned above, or it may be stationary.

The cross-section of the side of the ridge facing the pile may be of any suitable form for instance, straight, curved, or in the form of steps, &c.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In combination with a suitable feeding device adapted to act upon the upper surface of a pile of sheets, a stationary inclinein the path of the sheets, adapted to contact with the topmost sheet or sheets after they have been fed forward from the pile, a rocking arm at the upper edge of said incline and forming a continuation thereof, and a feedwheel cooperating with said arm substantiatly as described.

2. In combination with a suitable feeding device adapted to operate upon the upper surface of a pile of sheets, a stationary incline in the path of the sheets, but separated from the pile, a rocking arm at the upper edge of said incline and forming acontinuation thereof, and a feed-wheel cooperating with said arm, a cylinder or roller in advance of said incline and a second cylinder or roller movable toward and from said first-named roller substantially as described.

3. In combination with a suitable feeding device for operating upon a pile of sheets, of a stationary incline in the path of said sheets arranged to be struck by the sheets after they have been fed forward from the pile and a rocking plate having its lower edge in juxtaposition to the upper edge of said stationary incline, substantially, as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

ERNST JULIUS I-IALLBERG.

Witnesses:

CARL TH. SUNDHOLM, HANS D. OHLSSON. 

